Process and apparatus for treating oil



April 28, 1925. 7 1,535,211

G. EGLOFF ET-AL PROCESS AND APPARATUS FOR TREATING OIL Original Fi1ed.0ct. 2 1920 @JMo/WW for Treating PATENT oFF cE.

ousrnv-tnerorr AND nanny r. Banana, TUNIVEBSAL OIL manners COMPANY, or

soo'rn. nnxora.

or CHICAGO,- ILLINOIS, ASSIGNOBS ro CHICAGO, ILLINOIS, A CORPORATION or rnoonss Ann ArrAnA'rUs ron TREATING OIL.-

Application filed October 23, 1920,- Serial No. 419,058 Renewed October 556,119123;v

To all whom it may concern:

' Be it known that we,GUs"rAv Eonorr and HARRY P. BENNEB, both citizens of the United" States, residing in the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Processes and Apparatus Oil, of which the following is a specification. p This invention relates to improvements in process and apparatusfor treating oil and refers more-specifically to the cracking of petroleum oils having a higher carbon con tent than mostoils so as to produce pure carbon forusem'varlous arts such as pigments,

, tires, phonograph records, electrodes, de-

"odorizlng and decolorizing of oils, etc.

In carrying out the process, 011 treated is cracked by heat and pressure and the carjion precipitated iscontinuously v conveyed to a filter press and thence subjected to the action of suitable solvents.

In the. cracking of petroleum oils, the

" production ofcarbon is an inevitable necessity buta nuisance and the carbon is generally either a'more or less waste productoi suitable only for very cheap uses. By means of the resent invention, however,-we, continuous y remove'the-carbon from the systom which in itself is advantageous and then as a feature of the invention, continuously sub1ectit, first, to filtering action andthen i to theaction ofsolvents.

We also provide a novel apparatus for car in out our process. In the'drawing, the sin e figure is a view partly in side elevation an partly in section, of our improved apparatus. v

- Referring more in detail tothe drawing, 1 desi ates a furnace,'2the burner, 3 the combust on chamber or fire zone and-4 the st ack. Inthe furnace is mounted the still, which may ofany suitable type. In the-present in sta'nce, wehave shown a continuous coil of pi eas forexample, a4 coil 5, the inlet si e of which is connected to inlet line 6 having throttle valve? and leading to charging pump 8.' Theinlet side of the charging pump 8 is connected by .a line 9 having throttle valve 10, to any suitable supply tank. The heated oil while in liquid phase is delivered to an expansion chamber 11 by means of transfer line 12-inwhich is interposed a throttle valve 13; This expansion 20 and 21 the petroleum it may be retreated elsewhere.

and treating the carbon vent the reflux condensate from falling back into the expansion chamber while at the same time permitting'the vapors to ,pass freely into the dephlegmator. The dephleg'mat'or is provided with suitablebaflies outlet pipe 22, having throttle valve 23, which pipe 22 leads to condenser coil 24 seated in condenser box 25.- The coil 24 -.is connected-by nieansjof pipe 26 having throttle valve 27 to the upper end of a receiver28.

Thisreceiver 28 isprovided with pressure gauge 29, liquid level gauge 30, gas'outlet pipe 31, having throttle valve 32 and liquid draw'off pipe 33, having throttle valve 34. Reflux condensate is drawn off from near the lower end of the dephlegmatorbyipipe 35 having throttle'valve 36"and leading to a vapor outlet pipe 16,

and at'its upper end with a vapor? coolingv coil 37 seated in box 38. Thejcoil 37 is connected by pipe 39 having throttle valve '40, to the upper end of receiver 41.' This receiver 41 is provided with pressure gauge 42, liquid level gauge 43, gas outletpipe 44, having throttle valve 45 and liquid drawoff pipe 46 having throttle valve 47. The ar rangement is such that the reflux condensate may be separately cooled and collected and ei her;returnedto the supply tank containing the charging oil andthus again retreated or Referring now to'themeans for filtering precipitated inthe at the lower end of the expansion chamber,

drawoif pipe 48 having latter, we provide a .valve 49 and connected to suction pump 50.

The 'dischargp side of this suction pump 50 is connected yline 51 havingthrottle valve 52 to a filter ress 53. The heavy'oil and suspended carbon thereinis pumped out of the expansion chamber by means of the pump 50 into the filter press 53 where the oil is pressed out. The; carbon, substantialy free from its oil, is delivered to trough 54 and thence to the carbon buckets 55 carried by the traveling conveyor 56.- These buck- 1 ets deliver the carbon into the upper end of which shaft carries agitator blades 60. A

, solvent. is continuously circulated through the tank by means of the circulating 61 and lines 62 and 63 and 64, and

pum feed i also provided as shown.

ne 65. Throttle valves 66 and 67 are The solvent used by us may be benzine carbon bisulphide or the extractives. The'purified carbon may be withdrawn from the tank when the operation is finished. T\he agitator blades serve to circulate the solvent through and around the carbonaceous material.

The process may be operated as follows;

A Mexican or California petroleum oil, particularly one which will produce carbon as high as 20 to 30% of the oil by weight cracked may be fed through the heating coil and there heated to a temperature of 700 (legs. F. and maintained under a pressure of say,.10 0 pounds by suitably regulating the valve 13. The heated oil as it passes into the expansion chamber vapo-rizes and carbon is precipitated. The pressure on the balance of the system may be icduced to atmospheric or to a pressure of 75 pounds or if desired, a uniform pressure may be maintained on. the entire system. The heavy residue with its carbon content'is continuously drawn off by the pump and forced into the filter press where the oil constituents thereof are pressed out, drawn 011' and saved. The carbon content'is continuously delivered-to the extraction tank and there purified to produce pure carbon. This pure carbon is suitable for the purposes hereinbefore referred to as well as for any other purpose which pure carbon is suitable for. Weclaim as our invention:

1. .In an apparatus for treating petroleum oil, thec'ombination with a. still in which the oil may be subjected to a cracking temperature and pressure, an expansion chamber connected thereto, a filter press, means for drawing oil the carbon containing residue from the expansion chamber and forcing it through the filter press,'an extraction tank for receiving the carbon from the filter press, means for circulating a solvent through the extraction tank, and means for agitating the contents of the extraction tank I 2. In an apparatus for treating petroleum oil, the combination with a still in which the oil may be subjected to a cracking temperat-ure and pressure, an expansion chamber 1 connected thereto, a filter press, means for drawing off the carbon containing residue from the expansion chamber and forcing it through the filter press, means for circulating a solvent through an extraction tank provided for receiving the carbon from the filter press.

v 3. In an apparatus for treating petroleum oihthe combination with a still in which the oil may be subjected to a cracking temperature and pressure, an expansion chamber connected thereto, a filter press. means for drawing oil the carbon containing residue from the expansion chamber and forcing it through the filter press, an extraction tank for receiving the carbon from the filter press, and means for agitating the contents of the extraction tank.

4:. A process of producing purified carbonconsisting in cracking petroleum oil, precipitating the carbon thereby produced, withdrawing the carbon containing oil, passing it through a filter, removing the carbon from the filter and subjecting it to the action of solvents.

GUSTAV EGLOl F. HARRY P. BENNER. 

